Metropolitan Timotheos had the distinction of having the longest reign within Australasia, a distinction he held until 1990, being eclipsed during the reign of ArchbishopStylianos (1974-present).

He presided over the Greek Orthodox Metropolis of Australia and New Zealand until his 1947 election as Metropolitan of Rhodes.

In June of 1949, Metropolitan Timothy was elected Archbishop of North and South America, as successor to Archbishop Athenagoras who had been chosen as Ecumenical Patriarch earlier in the year. However, the Metropolitan suffered a series of heart attacks prior to assuming the post and was forced to resign before he could assume the throne of the Archdiocese. He was permitted to continue as Metropolitan of Rhodes, where he died in October.